Clear-Com KB-802GM-IM Encore 2-Channel Remote Speaker StationThe KB 802GM IM remote speaker station permits the user to select between two channels of partyline communications, with the ability to talk and or listen on the selected channel. The user can listen via the integral speaker, or may use a headset or telephone style handset and can talk via a gooseneck mic, headset mic, a telephone handset, or a push to talk microphone. A switch allows the user to choose between the optional GM 9 or GM 18 microphone